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Significant Accounting Policies - Additional Information (Detail) (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Significant Accounting Policies [Line Items]      
Percentage of revenue from a single major customer 13.00% 10.60% 12.00%
Gross sales $ 2,445,200,000 $ 2,028,600,000 $ 1,975,100,000
Capitalized interest   630,000 1,945,557
Advertising costs 1,141,000 751,000 637,000
Building | Maximum
     
Significant Accounting Policies [Line Items]      
Property Plant and Equipment, estimated useful life   39 years 39 years
Building | Minimum
     
Significant Accounting Policies [Line Items]      
Property Plant and Equipment, estimated useful life   15 years 15 years
Machinery and Equipment | Maximum
     
Significant Accounting Policies [Line Items]      
Property Plant and Equipment, estimated useful life   12 years 12 years
Machinery and Equipment | Minimum
     
Significant Accounting Policies [Line Items]      
Property Plant and Equipment, estimated useful life   3 years 3 years
Cash Equivalents | Fair Value, Inputs, Level 2
     
Significant Accounting Policies [Line Items]      
Fair value of cash equivalents 27,800,000 11,100,000  
Cash Equivalents | Maximum
     
Significant Accounting Policies [Line Items]      
Highly liquid investments included as cash equivalents, maximum maturities 90 days    
Outside United States
     
Significant Accounting Policies [Line Items]      
Gross sales 318,700,000 253,800,000 191,400,000
Offal
     
Significant Accounting Policies [Line Items]      
Gross sales $ 43,100,000 $ 35,400,000 $ 22,900,000
Customer Concentration Risk | Individual Customer
     
Significant Accounting Policies [Line Items]      
Number of customer accounted for of consolidated sales 1 1 1